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WO2018143788A1 - Procédé de préparation d'un mélange pour béton mousse - Google Patents

Procédé de préparation d'un mélange pour béton mousse Download PDF

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Publication number
WO2018143788A1
WO2018143788A1 PCT/KZ2017/000022 KZ2017000022W WO2018143788A1 WO 2018143788 A1 WO2018143788 A1 WO 2018143788A1 KZ 2017000022 W KZ2017000022 W KZ 2017000022W WO 2018143788 A1 WO2018143788 A1 WO 2018143788A1
Authority
WO
WIPO (PCT)
Prior art keywords
foam
mixer
mixture
concrete mixture
preparing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KZ2017/000022
Other languages
English (en)
Russian (ru)
Inventor
Георгий Гивиевич ТОКМАДЖЕШВИЛИ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saduakassov Mederbay
Original Assignee
Saduakassov Mederbay
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saduakassov Mederbay filed Critical Saduakassov Mederbay
Publication of WO2018143788A1 publication Critical patent/WO2018143788A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/73—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with rotary discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • B28C5/14—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a horizontal or substantially horizontal axis

Definitions

  • the invention relates to the production of building materials, in particular, to equipment for preparing a foam concrete mixture in a continuous way.
  • the partition is made in the form of a disk mounted on the shaft between the blades with a gap relative to the inner surface of the housing.
  • the area of the annular gap of the disk is 3-15% of the area of the circle bounded by the circumference of the inner cylindrical surface of the housing.
  • a disadvantage of the known device is the production of foam in the upper cylinder with insufficiently stable performance, and, accordingly, the production of foam concrete with unstable physical and mechanical properties.
  • the formation of low-quality foam in the known device is due to the fact that in a small chamber with a high speed of passage of gas and an aqueous solution of the foaming agent, a stable foam does not have time to form, which ultimately leads to foam concrete with reduced strength characteristics and with different average densities.
  • production inspection a well-known analogue showed the possibility of the solution from the chamber "A" to the chamber "B” through the annular gap "a", which leads to the destruction of the foaming device and the breakdown of the unit.
  • a disadvantage of the known device is the relatively small productivity, as well as the lack of homogeneity of the mixture when trying to increase the performance of the mixer due to the larger supply volume of the starting components.
  • the productivity of the device with a working volume of the mixer of 6 l is from 2 to 6-6.5 m 3 / h, which is insufficient when, for example, monolithic work is carried out, to fill the outer wall or the insulating layer of foam concrete.
  • an insufficiently homogeneous mixture leaves the mixer, since when the mixing time is shortened, the foam and the solution do not have time to mix until homogeneous.
  • the volume of the mixer, these two components fill up in about 2.16 s and, accordingly, for the same period of time they must mix, as they will be replaced by new portions of the solution and foam.
  • Tests in practice have shown that, for example, for foam concrete with a density of 600 kg / m 3 , with this mixing mode and this mixer design, a homogeneous mixture is not achieved: a relatively acceptable uniformity is provided when the solution is supplied in an amount of 1.5-2 m 3 / h and foam, respectively, in an amount of 2.25-3 m 3 / h, respectively, the productivity of the installation for the preparation of foam concrete mixture will be 3.75-5 m / h.
  • the duration of mixing is 5.76 and 4.32 s, respectively, i.e.
  • the volume of the supplied foam significantly exceeds the volume of the mortar supplied to the mixer.
  • the volume of foam supplied will be 10.4 m 3 / h and the yield of foam concrete the mixture will be respectively 16.4 m 3 / h
  • the duration of mixing upon receipt of foam concrete with the specified density will be 1, 5 s.
  • the productivity of the installation decreases sharply, due to the need for supply initial components in a smaller volume per unit time in order to increase the duration of mixing.
  • the productivity of the installation upon receipt of foam concrete with a density of 240 kg / m 3 will be no more than 3.6 m 3 / h. But with such a low productivity of the device for preparing a foam concrete mixture, it is impossible to provide production capacity acceptable for construction work.
  • the closest to the declared one is a device for aerating mortars in which the mixer is structurally separated from both the foam generator and the chamber for preliminary injection of foam (RF Patent JY ° 2134637 of 01/13/98, MKI 6 V 28 ⁇ 5/38, Device for aeration of mortars / Yu.P. Trifonov, V. G. Sukhov, V. A. Millar).
  • the preparation of the foam concrete mixture in a separate mixer with rod mixing bodies can improve the homogeneity of the mixture and slightly increase the productivity of the device (up to 10 m 3 / h with a foam concrete density of 400 kg / m 3 ).
  • the solution with foam in this device is also mixed due to the rotational movement of materials.
  • the disadvantage of this device is the insufficient productivity of the device and the increased density of foam concrete obtained with its use, which, on the one hand, does not allow using it to produce heat-insulating foam concrete with a density of 150-300 kg / m 3 , on the other hand, it limits the use in monolithic construction due to the small the output of the mixture per unit time.
  • the objective of the proposed invention is to increase the performance of the mixer and ensure the production of foam with low density and low thermal conductivity.
  • EFFECT increased productivity of the device up to 30 m 3 / h and production of foam concrete with an average density of 1400 to 150 kg / m 3 .
  • the mixing body of the mixer is made in the form of two blades rotating in opposite directions, mounted on disks with a larger and smaller diameter, and foam under pressure of 0.2-0.6 MPa and mortar mixture are supplied into the interior of the mixer, discarded onto the blades of a large disk rotating in the opposite direction, and the foam concrete mixture is discharged through the discharge pipe from the bottom of the mixer.
  • the shafts of the discs with larger and smaller diameters are located on the same axis.
  • the mixing mode in which the foam and the solution are repeatedly mixed randomly, and in a split second, provide a homogeneous mixture in a relatively short period of time.
  • Foam is prepared by any of the known methods in a separate foam generator and is not structurally connected with a mixer for porous mortar.
  • FIG. 1 shows a longitudinal section of a device for preparing a foam concrete mixture.
  • the device comprises a cylindrical housing 1 and two drive shafts 2 and 3, connected to electric motors 4 and 5. On the shaft are mounted large 6 and small 7 discs on which the mixing blades 8 and 9 are mounted.
  • a pipe 10 for supplying the original mortar and a pipe 1 1 for supplying foam are located in the middle of the chamber, and a pipe 12 for outputting the mixed foam concrete mixture is located in the lower part of the chamber.
  • the foam is prepared separately by any known method using continuous technology and under a pressure of 0.2-0.6 MPa simultaneously with the solution are fed into the middle part of the cylindrical body, into the inside of a small disk with blades. From the bottom of the chamber, the mixed foam concrete mixture is discharged through the pipe 12 and is poured into the molds using hoses.
  • the device operates as follows.
  • the motors 4 and 5 are turned on, and foam is separately prepared in the foam generator under a pressure of 0.2-0.6 MPa through the nozzle 1 1 into the internal cavity of the small disk; at the same time through the pipe 10 serves a mortar mixture.
  • the foam with the help of the blades 9 begins to mix with the solution continuously flowing through the nozzle 10. From the blades 9, the partially mixed solution with foam is displaced from the central part of the body to the outer part of the disk with a smaller diameter and enters the disk blades with a larger diameter, which rotate in the opposite side.
  • a complicated chaotic movement of the solution and foam is created in the mixer, in which the foam and the solution intersect many times and the whole process proceeds at high speeds of the mixing organ (1000-1500 rpm).
  • the multi-density mixture in a short period of time reaches a homogeneous state.
  • the finished mixture is discharged through the pipe 12 and poured into molds or formwork when the wall or insulating layer is installed using monolithic technology.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Abstract

L'invention concerne la fabrication de matériaux de construction et notamment un équipement pour la préparation d'un mélange de béton mousse par procédé ininterrompu. Le dispositif de préparation d'un mélange pour béton mousse comprend un corps cylindrique pourvu de deux arbres sur un même axe sur lequel sont emmanchés contrarotatifs des disques à plus grand et plus petit diamètres munis de palettes, de tubulures d'amenée de mousse et de mélange dans la partie centrale du mélangeur, et d'une tubulure de déchargement dans la partie inférieure du corps. Le résultat technique consiste à augmenter la productivité du dispositif jusqu'à 30 m3/h et obtenir du béton mousse ayant une densité moyenne de 1400 à 150 kg/m3.
PCT/KZ2017/000022 2017-01-31 2017-10-16 Procédé de préparation d'un mélange pour béton mousse Ceased WO2018143788A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KZ20170084 2017-01-31
KZ2017/0084.1 2017-01-31

Publications (1)

Publication Number Publication Date
WO2018143788A1 true WO2018143788A1 (fr) 2018-08-09

Family

ID=63040990

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KZ2017/000022 Ceased WO2018143788A1 (fr) 2017-01-31 2017-10-16 Procédé de préparation d'un mélange pour béton mousse

Country Status (1)

Country Link
WO (1) WO2018143788A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109808060A (zh) * 2019-03-26 2019-05-28 福建三凯建筑材料有限公司 一种建筑砂浆混合搅拌罐
CN109808061A (zh) * 2019-03-26 2019-05-28 福建三凯建筑材料有限公司 一种砂浆搅拌设备
CN111531681A (zh) * 2020-05-11 2020-08-14 胡易锋 一种制备泡沫混凝土设备用的搅拌筒
CN111958834A (zh) * 2020-09-03 2020-11-20 常州易能科技有限公司 便携式泡沫混凝土制造设备用中转储料袋
CN112123570A (zh) * 2020-09-25 2020-12-25 郑世成 一种建筑施工用砂浆混匀装置
WO2022073434A1 (fr) * 2020-10-08 2022-04-14 陈久斌 Machine de moussage de matériau en mousse
CN114384234A (zh) * 2021-12-29 2022-04-22 宜昌益智建材有限责任公司 用于新拌泡沫混凝土流动度和湿密度的测定装置及方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1733018A (en) * 1929-01-10 1929-10-22 George B Hinton Apparatus for making a cellular fabric
SU852579A1 (ru) * 1979-03-30 1981-08-07 Казахский Политехнический Институтим. B.И.Ленина Смеситель
SU933472A1 (ru) * 1980-05-21 1982-06-07 Государственный Всесоюзный Научно-Исследовательский Институт Строительных Материалов И Контрукций Им. П.П.Будникова Устройство дл приготовлени пены
RU2134637C1 (ru) * 1998-01-13 1999-08-20 Трифонов Юрий Петрович Устройство для аэрации строительных растворов

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1733018A (en) * 1929-01-10 1929-10-22 George B Hinton Apparatus for making a cellular fabric
SU852579A1 (ru) * 1979-03-30 1981-08-07 Казахский Политехнический Институтим. B.И.Ленина Смеситель
SU933472A1 (ru) * 1980-05-21 1982-06-07 Государственный Всесоюзный Научно-Исследовательский Институт Строительных Материалов И Контрукций Им. П.П.Будникова Устройство дл приготовлени пены
RU2134637C1 (ru) * 1998-01-13 1999-08-20 Трифонов Юрий Петрович Устройство для аэрации строительных растворов

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109808060A (zh) * 2019-03-26 2019-05-28 福建三凯建筑材料有限公司 一种建筑砂浆混合搅拌罐
CN109808061A (zh) * 2019-03-26 2019-05-28 福建三凯建筑材料有限公司 一种砂浆搅拌设备
CN111531681A (zh) * 2020-05-11 2020-08-14 胡易锋 一种制备泡沫混凝土设备用的搅拌筒
CN111958834A (zh) * 2020-09-03 2020-11-20 常州易能科技有限公司 便携式泡沫混凝土制造设备用中转储料袋
CN112123570A (zh) * 2020-09-25 2020-12-25 郑世成 一种建筑施工用砂浆混匀装置
WO2022073434A1 (fr) * 2020-10-08 2022-04-14 陈久斌 Machine de moussage de matériau en mousse
CN114384234A (zh) * 2021-12-29 2022-04-22 宜昌益智建材有限责任公司 用于新拌泡沫混凝土流动度和湿密度的测定装置及方法

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